We present a method for tuning a photonic crystal microcavity by rotating electromagnetically the director axis of the liquid crystal surrounding the microcavity.

• 中文摘要光子晶体结构是由材料折射率或介电常数以周期性排列而组成的结构，这样的结构会产生光子晶体能隙，能完全阻挡光波的通过。